2312515505 has 4 divisors (see below), whose sum is σ = 2775018612. Its totient is φ = 1850012400.

The previous prime is 2312515481. The next prime is 2312515523. The reversal of 2312515505 is 5055152132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1146702769 + 1165812736 = 33863^2 + 34144^2 .

It is not a de Polignac number, because 2312515505 - 2¹⁰ = 2312514481 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231251546 + ... + 231251555.

It is an arithmetic number, because the mean of its divisors is an integer number (693754653).

Almost surely, 2^2312515505 is an apocalyptic number.

It is an amenable number.

2312515505 is a deficient number, since it is larger than the sum of its proper divisors (462503107).

2312515505 is an equidigital number, since it uses as much as digits as its factorization.

2312515505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462503106.

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 2312515505 is about 48088.6213672216. The cubic root of 2312515505 is about 1322.3960736560.

Adding to 2312515505 its reverse (5055152132), we get a palindrome (7367667637).

The spelling of 2312515505 in words is "two billion, three hundred twelve million, five hundred fifteen thousand, five hundred five".